Documentation hanger bar for library storage unit



FIG. 1 is a front elevational view of a documentation hanger bar for library storage unit showing our new design;

FIG. 2 is a right side elevational view, the left side being substantially identical thereto;

FIG. 3 is a rear elevational view;

FIG. 4 is a top plan view;

FIG. 5 is a bottom plan view; and,

FIG. 6 is a perspective view. 

The ornamental design for a documentation hanger bar for library storage unit, as shown and described. 